Philips 47PFS7509/12 LCD TV problem

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  • janos6662000
    Member
    • Mar 2015
    • 29
    • Romania
    #1

    Philips 47PFS7509/12 LCD TV problem

    Hi

    I have here a Philips 47PFS7509/12 LCD TV which came to me with a weird problem : without signal i could access menu, make a factory reset, access menus, etc.
    When i applied cable signal to check image, i had normal picture, but TV was restarting.
    I downloaded original firmware and applied the update, but the problem remained.
    From a colleague i received a "factory package software" which is a lot bigger.
    I made another firmware update, but still did not solve the problem.
    Somewhere on the way the error got worse, because at the moment the TV does not boot to menu, i get the Philips logo and stays there forever.
    It is not dead, because i can rewrite the firmware as many times i want, but...
    I noticed one thing. When i power up the TV with the firmware update stick, i get the "Software update in progress" message.
    This goes for only 30 seconds, then TV restarts. Second time the process is much longer, but i think the time differs, i noticed that after 4-7 minutes the TV restarts again, this time to logo, no more "Software update in progress" message.
    I left it even 30 minutes, nothing happens.
    If i power it down and power it up, i can redo the process, but same happens.
    If i remove the USB stick, i get only the logo.
    I think that it is an emmc issue, but any idea is welcome.
    Maybe i could make an RS232 connection to check the boot messages?
    Please share your ideas.

    Thanks in advance.
    Best regards,
    Janos
    Tags: None
    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12210
      • U.S.
      #2
      what kind of signal are you trying, tuner, hdmi, if hdmi did you try another cable?

        Comment

        • janos6662000
          Member
          • Mar 2015
          • 29
          • Romania
          #3
          Hello
          I was trying cable TV (european standard, RF to tuner), but now i cannot get anywhere, with or without a signal.
          What is also interesting, the TV has a Demo picture. When i selected that, got a nice picture, without restarting the TV.
          Now... only the logo, or the firmware update message.

            Comment

            • nomoresonys
              Badcaps Legend
              • Jan 2013
              • 12210
              • U.S.
              #4
              Probably not it but won't hurt to try a simple reset. Unplug tv wait 10 minutes-hold power button on tv for 42 seconds-let go-plug tv back in and try it.

                Comment

                • lotas
                  Badcaps Legend
                  • Jan 2016
                  • 4613
                  • Russia
                  #5
                  Connect via UART and watch the boot log, most likely the eMMC will die.
                  Attached Files

                    Comment

                    • nomoresonys
                      Badcaps Legend
                      • Jan 2013
                      • 12210
                      • U.S.
                      #6
                      What's going on with the indicator light on the front of tv, blinking, solid, not on?

                        Comment

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